The Costa Rica international joined Madrid last summer, having impressed for Levante in La Liga and with the national side as they made the World Cup quarter-finals.

Navas was used as back-up throughout the 2014-15 season, but with Casillas struggling for his best form and being barracked by his own fans during games at the Bernabeu, new boss Rafael Benitez could look to make a change.

According to RTVE in Spain, Madrid president Florentino Perez is keen to move Casillas on this summer, with United's player of the year for two consecutive seasons De Gea lined up as the long-term replacement.

This all leaves the future of Navas, 28, up in the air, as he himself admitted after a superb performance in Costa Rica's 2-1 friendly defeat to Spain on Thursday.

Dale O’Donnell

Dale O’Donnell is a freelance journalist and founder of Manchester United blog Stretty News. He has previously conducted interviews with former footballers such as Gary Neville, Jason McAteer and Mikaël Silvestre. Dale’s work has been published on outlets such as the Guardian, Daily Mail, Telegraph, Sky Sports and more.